it feels under-tested. i absolutely hate how after dying to a boss, your powerups just get completely reset without any way to get them back. also, what's up with that difficulty spike on boss 3? there's barely any stage, and then you get ambushed by those two mini-bosses with a crazy bullet pattern without even getting the chance of a power-up or a new shot type? it feels like the game is balanced for the player alread having a few upgrades, but actually getting to those upgrades is pretty hard since failing once leaves you on a terrible loss loop. i liked the art, but the difficulty felt very unfair and some bullets were very hard to read.
F those missiles on stage 3 that shoot the fastest bullets known to man and F that boomerang attack on boss 2.